— 161 — 
short or indistinct. Perichetial leaves short-apiculate nearly 
without lamelle. Capsule globose or broad-oval; lid short-api- 
culate. Stem low simple or very slightly branched. Habit of 
P. sexangulare. — Higher alp. region r. Eur. Norway! Amer. 
Can: J. Macoun. Alaska: J. M. Macoun. Greenl.: Vanhoeffen. 
14.P.polare C. Mueller. 
Differs from the last in more distinct and dentate awn of 
leaves; capsule oval often oblique; stem divided somewhat high. 
— Arctic distr. r. Amer. Greenl: Pansch, com. C. Mueller. 
; III. Eu-Polytrichum. 
A. Capsule green and not distinctly angled when unripe, 
. u$. 6-angled when ripe. Leaves channelled or with inflexed 
wings, not appressed when dry; awn red-brown or indistinct; 
apical cell of lamina not papillate. Stem simple. 
15.P.sexangulare Floerke. — P. septemtrionale C. M. syn. 
Leaves short obtusate obtuse entire or at apex with very 
few teeth, not rough at back; wings very narrow or indistinct; 
lamellee about 30; awn indistinct or very short and red. Cap- 
sule suboval finally short prismatic; pedicel yellowish or pale 
red not long. Stem not tomentose us. low. Habit of P. alpi- 
|. "wm. — On earth in higher alp. region. Eur. less r. Norway! 
. Sweden: Indebétou. Amer. r. Can. Brit. Col: Macoun. U. 8.: 
. Roell, 
16.P.gracile Dickson; Menzies. 
Leaves long subulate-acuminate dentate to the sheath, us. 
green; wings broad princ. below; lamelle about 40; awn brownish 
not long. Perichetial leaves hyaline-bordered. Capsule round- 
oval finally cubic; apophysis sometimes less distinct; lid broad- 
conic when young, finally apiculate or rostellate; pedicel long 
yellowish or finally reddish. Spores about 0,02 m. m. Stem 
| Us. tomentose below, often high. — Turfy soil and rocks also 
in alps. Eur. not r. Sweden, Norway! Amer. not common. 
Can.: Macoun. 
B. Capsule 4-angled prismatic soon becoming brown. Leaves 
acuminate acute with distinct wings. ; 
a. Leaves entire or above with few teeth, channelled or 
Convolute; apical cell of lamellæ unipapillate. Perichetial leaves 
-hyaline above. 
M 17.P juniperinum Willdenow. 
aves long long-subulate gen, entire, very patent or curved 
. When moist, us. not appressed when dry; lamellae about 50; 
. Costa rough above at back; awn long rough wholly red. 
